Did this as a mystery today. Researched it a bit and found that it is poisonous to cats! You can buy the seeds on line and they're not too expensive. The ones that are red like this one are known as dragon blood trees.

I love unusual trees and this one is one of the weirdest ones yet. I too wonder why it is called the dragon tree. Maybe it was the only tree high enough for the dragon to reach to eat. Is it because the dragon blew out the flames from the lower part of the tree? It's fun to speculate. It is so perfectly shaped. Only God can make a tree like Joyce Kilmer so poetically put it. Thanks for a great puzzle. Nancy